It's really interesting with the colours as China is highly based on the elements.
Black- Unity, Freedom
Teal/Green- Health, Prosperity
Red/Orange- Good fortune, happiness
Gold/Yellow- Heroism and prestige.
Usually the above two (Gold and Red) are combined for the ultimate combination.
Have no doubt that the AFL want the Gold Coast to benefit from this over Port. And while they are being done hard by, Koshie is well Koshie so LOOL.